49 results about "Electrode adhesive" patented technology

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a self-repairing type lithium ion battery positive electrode adhesive, a preparation method, positive electrode slurry and a positive electrode plate. The adhesive comprises a mixed solvent, and a first copolymer serving as a main component and a second copolymer serving as a cross-linking agent are dissolved in the mixed solvent; the first copolymer is an acrylate-based multipolymer containing carboxyl or hydroxyl; the second copolymer is isocyanate terminated UPy functional polyurethane; the adhesive is in a liquid state at room temperature, when the adhesive is subjected to vacuum heat treatment at 60-180 DEG C, carboxyl or hydroxyl in main components of the adhesive reacts with isocyanate groups of a cross-linking agent to form amido bonds along with volatilization of a mixed solvent, and UPy groups are associated through quadruple hydrogen bonds to form dual dynamic cross-linking points. The method can effectively adapt to the volume change of the positive electrode material in the lithium removal / insertion process, and maintains the integrity of the electrode structure, thereby improving the cycling stability and rate capability of the lithium ion battery.

The embodiment of the present application provides a positive electrode material, a secondary battery and an electric device, wherein the positive electrode material comprises a core and a coating layer arranged on the surface of the core, the core comprises a sodium ion layered oxide, and the coating layer comprises a spinel lithium salt. In the embodiment of the present application, the layered positive electrode material is tightly coated by the spinel lithium salt, so that the problem that the interface impedance of the positive electrode material of the existing sodium ion battery is large and the positive electrode adhesive is easily attacked is solved.

The invention relates to the technical field of secondary batteries, and discloses a secondary battery, a negative active layer in a negative plate comprises a negative active material and a negative adhesive, the negative active material comprises a silicon-based material, the negative adhesive comprises a polymer, and the raw material of the polymer comprises a hard segment monomer and a soft segment monomer; the electrolyte comprises carbonic ester substances and lithium salt; on the basis of the total mass of the raw materials of the polymer, the mass content of the soft segment monomer is r%; on the basis of the total mass of the electrolyte, the mass content of the carbonic ester substance is t%; t / r is greater than or equal to 0.234 and less than or equal to 1.770. According to the secondary battery provided by the invention, the chemical structure of the adhesive is optimized and the composition of the electrolyte solution is adjusted, so that the excellent electrochemical performance of the battery is ensured, the swelling effect of the electrolyte on the adhesive is reduced, the cycle life of the battery is prolonged, and the safety of the battery is improved.

The invention discloses a sulfonyl-containing high-voltage-resistant positive electrode adhesive, a preparation method thereof, a battery positive electrode and a lithium ion battery, and belongs to the technical field of lithium batteries. The adhesive is a random copolymer of an acrylonitrile monomer, a sulfonyl-containing monomer and poly (ethylene glycol) methyl ether methacrylate, the sulfonyl-containing monomer has excellent oxidation resistance, can assist in forming CEI rich in inorganic components, and is beneficial to maintaining the structural stability and electrochemical stability of the CEI in the cyclic process; acrylonitrile can improve the adhesion and stabilize the surface structure of the positive electrode active material; by adding poly (ethylene glycol) methyl ether methacrylate, the flexibility of the polymer can be improved, and stress generated by volume change in the long-term charging and discharging process can be buffered. The sulfonyl-containing high-voltage-resistant positive electrode functional adhesive can effectively regulate and control CEI components, inhibits interface side reactions, and effectively improves the cycling stability of a high-voltage positive electrode battery.

The utility model provides a rubberizing mechanism and rubberizing device.The rubberizing mechanism comprises a rack, a transplanting assembly and an adsorption assembly, the transplanting assembly comprises a lifting module, the adsorption assembly comprises a first adsorption structure, a second adsorption structure and a driving structure, and the lifting module is in driving connection with the first adsorption structure and a first driving part; the first adsorption structure adsorbs the part, corresponding to the top surface of the battery cell, of the adhesive tape, the second adsorption structures are arranged on the two sides of the first adsorption structure in pairs, the second adsorption structures adsorb the parts, corresponding to the large surfaces of the two sides of the battery cell, of the adhesive tape, and the second driving part is in driving connection with the two second adsorption structures arranged in pairs; and the second driving part drives the two second adsorption structures to get close to each other or get away from each other. According to the application, the cooperative work of the first adsorption structures and the second adsorption structures is adopted, so that the adhesive tape bonding efficiency is improved; therefore, the problem that the battery cell packaging efficiency is affected due to poor applicability of the rubberizing mechanism of the pole piece in the prior art can be solved.

An electrode tape inspection device of the present invention is an electrode tape inspection device for continuously inspecting dimensions of an electrode and a tape attached to the electrode during an electrode taping process, and detecting foreign substances present on the electrode and the tape. The electrode tape inspection device comprises: a photographing unit provided to photograph the electrode and the tape attached to the electrode; a dimension measurement light unit provided to illuminate the tape to measure dimensions of the tape and the electrode; and a foreign substance detection light unit provided to illuminate the tape to detect foreign substances present on the tape and the electrode.

The invention relates to the technical field of lithium ion batteries, and particularly provides a gradient copolymer, a preparation method and application thereof, an adhesive, a negative pole piece and a lithium ion battery. The gradient copolymer provided by the invention comprises a repeating unit A generated by polymerization of at least one monomer A, a homopolymer corresponding to the monomer A has a glass transition temperature Tg1 of not less than 100 DEG C, and the number-average molecular weight of the homopolymer corresponding to the monomer A is 100,000-500,000; a repeating unit B resulting from the polymerization of at least one monomer B, the corresponding homopolymer of the monomer B exhibiting a glass transition temperature Tg2 of not more than 80 DEG C, and the number average molecular weight of the corresponding homopolymer of the monomer B being 100,000-500,000; the repeating unit A and the repeating unit B are connected through a carbon-carbon single bond. When the gradient copolymer disclosed by the invention is used as a negative electrode adhesive, the volume expansion stress release of graphite in the circulation process is more relaxed and progressive, and the cycle performance of a battery cell can be better improved.

A tetrafluoroethylene-based polymer composition for use as an adhesive in electrochemical devices is provided, which can reduce the resistance of electrochemical devices and also provide adhesive sheets with excellent adhesion to substrates. This is further explained by the use of the same composition in adhesives, electrode adhesives, electrodes, and secondary batteries for electrochemical devices. Specifically, a tetrafluoroethylene-based polymer composition for use as an adhesive in electrochemical devices is provided, wherein the tetrafluoroethylene-based polymer composition has polar groups, the content of which is less than 0.020 meq / g relative to the tetrafluoroethylene-based polymer composition, the tetrafluoroethylene-based polymer composition is non-melt processable, and the apparent density is less than 0.50 g / ml.

A parameter configuration method in a disposable electrocardio-electrode glue-to-glue alternating current impedance test comprises the following steps: (1) selecting a voltage source with an adjustable sine excitation amplitude, preparing a reference resistor R0 with an adjustable resistance value, and preparing a glue-to-glue disposable electrocardio-electrode pair as a test object; (2) connecting the selected and prepared adjustable voltage source, a reference resistor R0 and an electrode pair to be tested in series to form a test circuit; (3) repeatedly testing the alternating current impedance spectrum of the to-be-tested electrode pair for multiple times according to the pairing of one amplitude of sine excitation of the given voltage source and one resistance value of the reference resistor R0, and calculating a repeatability index; (4) changing pairs of the sine excitation amplitude of enough voltage sources and the resistance value of the reference resistor R0, repeatedly testing the alternating-current impedance spectrum of the electrode pair for multiple times under each pair, and calculating a repeatability index value of the alternating-current impedance spectrum; and (5) comparing the repeatability index values to obtain optimal pairing.

The present invention provides a separator for an electrochemical device and an electrochemical device comprising same, wherein lifespan characteristics are improved by obtaining adhesion between the separator and an electrode, a low-resistance electrode adhesive layer is achieved, and electrolyte wettability can be improved. The separator for an electrochemical device according to an embodiment of the present invention comprises: an olefin polymer porous support; an inorganic hybrid porous layer formed on at least one surface of the olefin polymer porous support; and an electrode adhesive layer formed on one surface of the inorganic hybrid porous layer, the one surface of the inorganic hybrid porous layer not being in contact with the olefin polymer porous support, wherein the electrode adhesive layer includes at least one adhesive portion and at least one uncoated portion on which the adhesive portion is not formed, the total coverage of the adhesive portion is 20-60% of the total area of the inorganic hybrid porous layer, and the minor axis length of the adhesive portion is at most twice the thickness of the separator.

This invention relates to the field of lithium battery negative electrode adhesive preparation technology, specifically to a method for preparing aminosulfonated cellulose salt and its application as a lithium battery negative electrode adhesive. The preparation method includes the following steps: S1, adding sodium carboxymethyl cellulose to an ethanol-water solution and reacting with sulfuric acid to obtain a first product; S2, adding the first product to an ethanol-water solution containing modified nano-calcium carbonate and adding sodium aminosulfonate dropwise to obtain a reaction solution; S3, adding sulfuric acid dropwise to the reaction solution to obtain a second product; S4, adding the second product to an ethanol-water solution and reacting with an alkaline solution to obtain a third product; S5, drying and pulverizing the third product to obtain aminosulfonated cellulose salt. The aminosulfonated cellulose salt prepared by this invention, when applied to the adhesive of the lithium battery negative electrode, can effectively improve the overall flexibility of the material and extend the battery's lifespan.

The invention discloses a solution type negative electrode adhesive as well as a preparation method and application thereof. The preparation method of the adhesive comprises the following steps: a, mixing and stirring polyacrylonitrile fibers and a modifier in water, and treating to obtain a pretreatment solution; b, uniformly dispersing the pretreatment liquid obtained in the step a by using a high-pressure homogenizer to obtain polyacrylonitrile fiber dispersion liquid; c, mixing and reacting the polyacrylonitrile fiber dispersion liquid, unsaturated monomers and an initiator to generate a polymer, and taking out a precipitate; and d, adding the polymer precipitate into water, and adding a neutralizer to adjust the pH value so as to prepare the solution type negative electrode adhesive. According to the invention, the PAA adhesive is modified by a special means, so that the embedding and de-embedding efficiency of lithium ions in the silicon-carbon / silicon negative electrode is improved, the surface cracking and powder falling of a pole piece caused by volume expansion of the silicon-carbon / silicon negative electrode in the charging and discharging process are avoided, and the cycling stability and the cycling efficiency of the silicon-carbon / silicon negative electrode are improved.

The packaging structure comprises a capacitor shell, a rubber cover is arranged at the bottom of the interior of the capacitor shell, an electrode is arranged at the top of the rubber cover, two pins are arranged at the bottom of the rubber cover, a heat dissipation base is arranged at the bottom of the capacitor shell, and the heat dissipation base comprises an installation base arranged at the bottom of the capacitor shell; the second heat dissipation holes are formed in the middle of the mounting base, and the second heat dissipation holes are formed in the mounting base in parallel at equal intervals; the second heat dissipation blocks are arranged in the second heat dissipation holes, heat generated by the electrodes is fully absorbed through the anti-explosion gaskets, the multiple heat dissipation fins are matched, the heat dissipation area is increased, heat dissipation is conducted in the circumferential direction, and the axial heat transfer rate is increased through the first heat dissipation blocks arranged in the first heat dissipation holes and the second heat dissipation blocks arranged in the second heat dissipation holes; and axial heat dissipation is carried out in cooperation with the ventilation slots, so that the heat dissipation effect is improved, the capacity change of the capacitor caused by temperature change is prevented, and the service life is prolonged.

The utility model belongs to the technical field of knurling of fireproof rolling shutter doors, and provides an efficient dispersing negative electrode adhesive preparation device which comprises a mixing preparation cylinder and a main body of the efficient dispersing negative electrode adhesive preparation device, an annular medicine mixing box is arranged on the periphery of the bottom of the mixing preparation cylinder, and a sealing door is hinged to the outer surface of the mixing preparation cylinder. After an adhesive enters the mixing preparation cylinder through the jet flow mixer, the adhesive falls on the impact plate and is dispersed on the screen plate, then the dispersed adhesive can slide down along the multiple flow guide strips, the adhesive passing through the multiple flow guide strips can form a dispersed water curtain, and then after the additive enters through the feeding opening, the water curtain can flow into the jet flow mixer to form a water curtain. The additive is dispersed along with the screen plate and is in contact with the flow guide strips forming the water curtains, so that the adhesive and the additive are in more uniform contact, and the adhesive and the additive need to pass through a plurality of groups of water curtains, so that the contact time of the adhesive and the additive is longer, and the reaction is more comprehensive.

This disclosure relates to a separator. The separator includes an electrode adhesive portion having a high binder content and formed on the surface of the separator to provide increased adhesion to the electrodes and improved processability during battery manufacturing. Therefore, the separator and electrodes are in close contact with each other to prevent gap formation, thereby providing an effect of improved resistive characteristics. In addition, the separator includes an inorganic coating disposed on the surface of a porous substrate, wherein the inorganic coating has a porous structure derived from the interstitial volume between inorganic particles, and thus the separator has appropriate porosity and sufficient electrolyte retention. Furthermore, because the separator includes an inorganic coating on the surface of the porous substrate, the separator ensures heat resistance and prevents shrinkage even when the internal temperature of the battery rises. This disclosure also relates to a method of manufacturing a separator. The method includes forming an inorganic coating and an electrode adhesive portion disposed on the inorganic coating in a single step by using the density of the inorganic particles and the density of the binder resin particles, and therefore has advantages in terms of ease of processing.

The invention relates to a preparation method and application of a phthaloyl gelatin adhesive. Gelatin and phthalic anhydride are subjected to a reaction, such that phthaloyl gelatin is prepared; preparing the obtained phthaloyl gelatin into an adhesive solution, and mixing the adhesive solution with beta-manganese dioxide and conductive carbon to obtain uniform positive electrode slurry; and coating a current collector with the positive electrode slurry to obtain the manganese dioxide positive electrode bonded by the phthaloyl gelatin. According to the invention, the phthaloyl gelatin is used as a positive electrode adhesive; a high-toughness adhesive network of the phthaloyl gelatin can better buffer stress and maintain the structural integrity of the electrode; the free carboxyl group optimizes the electrode-electrolyte wettability, constructs a zinc ion transmission channel, and promotes ion transmission kinetics under high magnification. The bio-based adhesive provides a new strategy for breaking through the stability and rate bottleneck of the zinc ion battery through multi-functional design.

This invention discloses a battery anode adhesive with a topological structure, its preparation method, and its application, belonging to the field of lithium-ion battery technology. The adhesive is prepared by bridging a hyperbranched polyamide intermediate with a carbonyl-containing copolymer through a nucleophilic addition-elimination reaction, forming a three-dimensional network with a topological structure. The adhesive prepared by this invention is water-soluble and can effectively disperse the anode material of lithium-ion batteries. Its topological structure, combined with multidimensional hydrogen bonds, tightly binds to the lithium-ion battery anode material, significantly improving the stability and cycle performance of lithium-ion batteries. After 500 charge-discharge cycles at 1C rate, the optimal capacity retention rate of the lithium-ion battery can still be maintained above 86%.

The invention provides a bio-based lithium battery negative electrode adhesive as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials for batteries. The preparation raw materials of the bio-based lithium battery negative electrode adhesive comprise diisocyanate, a macromolecular chain extender, a micromolecular chain extender, an unsaturated end-capping reagent, an organic solvent, water, an initiator and an amine neutralizer, wherein the macromolecular chain extender is at least one of bio-based polyester polyol or polyether polyol; the micromolecular chain extender comprises bis (hydroxymethyl) propionic acid. The bio-based lithium battery negative electrode adhesive material disclosed by the invention has very strong solvent-resistant and corrosion-resistant characteristics, can be prevented from being dissolved after being soaked in a strong electrolyte for a long time, and is controllable in swelling rate.

The present invention discloses a negative electrode binder, a preparation method thereof, a battery negative electrode, and a lithium battery. The negative electrode binder is prepared from gelatin, a small molecule crosslinking agent, and a copolymer monomer via a free radical copolymerization method. The chemical crosslinking between the gelatin and the copolymer in the negative electrode binder gives the three-dimensional network binder a very high molecular weight, providing strong adhesion and tightly bonding the silicon negative electrode to the current collector. Furthermore, the dynamic hydrogen bonds formed between the abundant amino, hydroxyl, and carbonyl groups on the gelatin and copolymer molecular chains ensure that the binder recovers within the instant of hydrogen bond breakage during charge and discharge, thereby effectively adapting to the significant volume changes of the active material silicon, tightly bonding the silicon negative electrode and the conductive agent to the current collector, preventing slurry shedding and further extending the battery's cycle life.

The present application relates to the technical field of lithium ion battery, disclose the full solid battery of composite solid electrolyte is adopted, the electrolyte is composed of polyethylene glycol methyl ether methyl methacrylate, 5wt%~10wt% polyethylene glycol dimethyl methacrylate crosslinking agent, 30wt%~70wt% NASICON type LAGP nanoparticles and lithium salt.The present application adopts in situ photopolymerization process, the composite material is used as unified medium and is applied to positive electrode adhesive and electrolyte layer simultaneously, realizes synchronous crosslinking solidification under the condition of pressure, constructs continuous three-dimensional ion transmission network and integrated interface of chemical bonding.The technical scheme effectively solves the problem of high solid-solid interface contact impedance and structural collapse caused by electrode cycle volume expansion, can effectively absorb the volume expansion stress generated in the process of charge and discharge of positive active material, improves the ionic conductivity, mechanical strength, high temperature resistance and long cycle stability of full solid battery.

The invention provides a positive electrode composite adhesive and a preparation method thereof, and relates to the technical field of positive electrode adhesives. The positive electrode composite adhesive comprises 20%-40% of anionic waterborne polyurethane resin with a polycarbonate type soft segment, 10%-25% of a maleic anhydride grafted polyolefin elastomer, 5%-15% of conductive nanoparticles, 1%-5% of a polycarboxylate anionic dispersant, 0.5%-3% of a thickening agent and the balance of deionized water. A water-based fluoride-free system is adopted, so that environment friendliness and high safety are achieved; the maleic anhydride grafted polyolefin elastomer is utilized to realize chemical bonding and elastic buffering, so that the pole piece is effectively prevented from cracking, and the bonding strength is improved; by combining the corrosion-resistant polycarbonate type polyurethane and the conductive nanoparticles, the electrolyte-resistant stability is ensured, an efficient conductive network is also constructed, and the cycle life and the rate capability of the battery are remarkably improved.

The present invention provides a binder for a secondary battery electrode, even when a silicon-based active material is used (the silicon-based active material is considered to be large in expansion and contraction due to charging and discharging). The binder for a secondary battery electrode exhibits a high capacity retention rate while suppressing expansion and contraction due to charge and discharge even when used over a long period of time compared with the prior art. Also provided are: a composition for a secondary battery electrode mixture layer, which contains the binder; a secondary battery electrode obtained using the composition; and a secondary battery. A binder for an electrode, which is a binder for an electrode of a secondary battery provided with a secondary battery electrode containing carbon nanotubes, and which contains a crosslinked polymer containing a carboxyl group or a salt thereof.

The application relates to the technical field of negative electrode adhesives, in particular to an acrylic negative electrode adhesive and a preparation method thereof. The preparation raw materials of the acrylic negative electrode adhesive include an acrylic polymer solution and a polyurethane polymer solution; the preparation raw materials of the acrylic polymer solution include a hydrophilic vinyl compound, a hydrophobic vinyl compound, an amide group-containing vinyl compound, water, a neutralizing agent and an initiator; and the preparation raw materials of the polyurethane polymer solution include a diisocyanate, a catalyst, an active hydroxyl group-containing polymer and an organic solvent. The prepared negative electrode adhesive has low modulus and high adhesive performance, is applied to battery negative electrode adhesion, effectively buffers the volume change of the negative electrode material during charging and discharging, and maintains the structural integrity of the electrode.

The utility model relates to cable connection tool technical field especially relates to a kind of armored cable connector of surveying and adjusting linkage instrument, it includes the main body connecting pipe and cable output end connected head to tail, the top end of main body connecting pipe is equipped with the fishing fish top middle and is equipped with the axial through wiring hole, bottom is equipped with anti-rotation slot, cable output end is equipped with sealed electrode rubber cap inside, bottom is equipped with output electrode, armored cable center work cable passes through sealed electrode rubber cap and is connected with output electrode;Armored cable is equipped with the anti-rotation pressing terminal matched with anti-rotation slot;Armored cable is equipped with upper pressing terminal above fishing fish top. The utility model provides a kind of armored cable connector of surveying and adjusting linkage instrument, by being equipped with fishing fish top, it is convenient to fish, by armored cable is inserted into main body connecting pipe and cable output end, reduce the working difficulty and workload in the process of joint production, reduce the corrosion degree of armored wire in the working process simultaneously, to reduce cable consumption.

The invention provides a preparation method of a lithium battery silicon negative electrode adhesive, which comprises the following steps: mixing a multi-arm high-molecular compound connected with an isocyanate terminal, carboxymethyl cellulose and polyacrylic acid for reaction to obtain the adhesive. According to the invention, carboxymethyl cellulose and polyacrylic acid are effectively connected through a multi-arm molecular structure, and the formed high-molecular compound has the advantages of carboxymethyl cellulose and polyacrylic acid, has good water solubility and adhesiveness, and also has excellent flexibility and viscoelasticity. When the silicon-based negative electrode material is applied to a lithium ion battery negative electrode, the volume change of the silicon-based negative electrode material in the charging and discharging process can be effectively inhibited, and the cycling stability of the electrode and the battery performance are improved.

This disclosure provides a separator for an electrochemical device and an electrochemical device including the same, the separator being able to improve lifetime characteristics by ensuring adhesion between the separator and an electrode, achieving an electrode adhesive layer with low resistance, and improving electrolyte impregnation. According to one embodiment of this disclosure, the separator for an electrochemical device includes: an olefin polymer porous support; an inorganic hybrid porous layer formed on at least one surface of the olefin polymer porous support; and an electrode adhesive layer formed on a surface of the inorganic hybrid porous layer that is not in contact with the olefin polymer porous support, wherein the electrode adhesive layer includes at least one adhesive portion and at least one uncoated portion in which no adhesive portion is formed, the total coverage of the adhesive portion being 20% ​​to 60% of the total area of ​​the inorganic hybrid porous layer, and the minor axis length of the adhesive portion being at most twice the thickness of the separator.

A tetrafluoroethylene-based polymer composition for use as an adhesive in electrochemical devices is provided, which can reduce the resistance of electrochemical devices and also provide adhesive sheets with excellent adhesion to substrates. This is further explained by the use of the same composition in adhesives, electrode adhesives, electrodes, and secondary batteries for electrochemical devices. Specifically, a tetrafluoroethylene-based polymer composition for use as an adhesive in electrochemical devices comprises a tetrafluoroethylene-based polymer and a polymer compound having ionic groups, wherein the content of the ionic groups is 0.020 meq / g or more relative to the tetrafluoroethylene-based polymer composition.

The present application relates to multi-walled carbon nanotube in-situ composite polyurethane and its preparation method, and belongs to the technical field of lithium ion battery materials. The present application solves the technical problem of providing a multi-walled carbon nanotube in-situ composite polyurethane, which facilitates the dispersion of carbon nanotubes. The polyurethane is formed by polymerization of polyurethane prepolymer and multi-walled carbon nanotubes, the end group of the polyurethane prepolymer is isocyanate group, and the multi-walled carbon nanotubes contain active groups that react with the end group of the polyurethane prepolymer. The polyurethane of the present application is grafted with carbon tubes in-situ, combined in the form of covalent bond, avoids the aggregation of carbon tubes, and improves the stability of the slurry. During the emulsification process, the carbon tubes penetrate through the entire latex particle, which is beneficial to the electron transport of the system. The polyurethane of the present application can be used as a negative electrode adhesive after being blended with PAA, which can avoid the negative influence on the peeling force and electrical performance caused by the introduction of small molecules. The adhesive can not only increase flexibility, but also reduce the DCR of the battery, and improve the charge-discharge performance.

The invention relates to a flexible polyethoxylated acrylate negative electrode binder as well as a preparation method and application thereof. The flexible polyethoxylated acrylate negative electrode binder comprises the following components in percentage by weight: 30-60% of a flexible unit and 40-70% of a rigid unit. The flexible unit is an ethoxylated acrylate monomer, and the rigid unit is one or more of acrylic acid and acrylamide. The binder can realize the characteristic of combining hardness and softness, not only ensures the adhesive force, but also has certain flexibility, can effectively inhibit the volume expansion of silicon, increases the usage amount of a silicon-based material to 60% or above, and is green, environment-friendly and low in price.

This invention discloses a lithium-ion battery anode adhesive and its preparation process, relating to the field of fine chemicals. It comprises the following raw materials in parts by weight: 90-100 parts SBR latex, 20-30 parts polyacrylate latex, 2-5 parts conductive polymer, 0.5-2 parts grafted catalyst, and 2-4 parts CMC. The preparation method is as follows: SBR latex, polyacrylate latex, conductive polymer, and grafted catalyst are stirred in a low-speed homogenizer. CMC is added, and stirring continues until a stable and dispersed emulsion is obtained. The lithium-ion battery anode adhesive provided by this invention can effectively inhibit pulverization and delamination, maintain the integrity of the conductive network, thereby improving the cycle performance of the anode material and extending the battery cycle life.